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【单选题】
Mary is the only one of the students in our class who ____ to the Great Wall so far.A.
is
B.
has been
C.
are
D.
had been
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举一反三
【单选题】In noise experiments, Glass and Singer found that __________.
A.
problem-solving is much easier under quiet conditions
B.
physiological arousal prevents the ability to work
C.
bursts of noise do not seriously disrupt problem-solving in the long term
D.
the physiological arousal of the control subjects declined quickly
【单选题】下面程序段的时间复杂度为( )。 void sum(int n) //n为正整数 { int p=1,sum=0,i; for(i=1;i<=n;i++) { p*=i; sum+=p; } }
A.
O(n^2) 注释:n^2表示求n的平方
B.
O(1)
C.
O(n)
D.
O(logn)
【单选题】Psychologists now believe that noise has a considerable effect on people's attitudes and behavior. Experiments have proved that in noisy situations(even temporary ones), people would have more anger a...
A.
can not complete his work in a noisy situation
B.
will suffer from complete deafness because of noise pollution
C.
can be psychologically affected by working in very noisy factories
D.
may cooperate well in a noisy surrounding
【单选题】一种行为的机会成本是指 ?
A.
为这种行为所花费的钱；
B.
为这种行为所花费的时间的价值；
C.
当你不必为这种行为付钱时就等于零；
D.
投入这种行为全部资源的其它可能用途的最大收益；
【单选题】一种行为的机会成本是指
A.
为这种行为所花费的钱
B.
为这种行为所花费的时间的价值
C.
当你不必为这种行为付钱时就等于零
D.
投入这种行为全部资源的其他可能的用途
【简答题】会 “变魔术”的柔性屏 佚 名 1一言不合就掰弯手机?这不是开玩笑,而是某知名厂商在自家的科技大会上向参观者展示的新科技——尚处于原型机阶段的柔性屏幕设备。其中一款是可折叠的变形手机,上网、看剧、收发邮件时,它是7英寸左右的平板电脑;要打电话时,只需轻轻对折就变成5英寸左右的智能手机。 2柔性屏是柔性显示屏幕的简称,是以塑料为基板,加上OLED(有机发光二极管)显示材料构成的显示屏。传统的显示屏都...
【简答题】Psychologists now believe that noise has a considerable effect on people's
attitudes and behavior. Experiments have proved that in noisy situations (even
temporary ones), people behave more irritabl...
【简答题】求下面程序段的时间复杂度 x=0; for(i=1; i
相关题目：
【单选题】一种行为的机会成本是指 ?
A.
为这种行为所花费的钱；
B.
为这种行为所花费的时间的价值；
C.
当你不必为这种行为付钱时就等于零；
D.
投入这种行为全部资源的其它可能用途的最大收益；